Friday
August 29, 2014

Posts by yusra


Total # Posts: 7

physic
A 4 kg object is attached to a vertical rod by two strings, as in the figure. The object rotates in a horizontal circle at constant speed 6 m/s. Find the tension in (a) the upper string and (b) the lower string.
April 18, 2010

physic
An object attached to the end of a string swings in a vertical circle (R = 1.2 m), as shown. At an instant when ƒá = 30„a, the speed of the object is 5.1 m/s and the tension in the string has a magnitude of 20 N. What is the mass of the object?
April 18, 2010

physic
A roller-coaster car has a mass of 500 kg when fully loaded with passengers. The car passes over a hill of radius 15 m, as shown. At the top of the hill, the car has a speed of 8 m/s. What is the force of the track on the car at the top of the hill?
April 18, 2010

physical
An airplane travels 80 m/s as it makes a horizontal circular turn which has a 0.8 km radius. What is the magnitude of the resultant force on the 75 kg pilot of this airplane?
April 18, 2010

history
please help me with this question 1. The Warren Commission declared that the Kennedy assassination a. was the act of a single man b. was part of a larger conspiracy c. resulted from poor security d. could have been avoided thanks!
April 2, 2009

history
im still stuck on this quetion...i dont get it?
April 1, 2009

history
i'm stuck on my history homeowork, can someone please help me with some of my questions how did the pattern of European immigration shift in 1890? the answer choices are: a. from Jewish to Catholic Europeans b. from northern to southern and eastern Europeans c. from ...
April 1, 2009

Pages: 1

Search
Members